<template>
 <!--头部区域  -->
    <el-container class="home-container">
         
        <el-header>
            <div>
                <img src="../assets/heima.png" alt="">
                <span>电商后台管理系统</span>
            </div>
            <el-button type="info" @click="logout">退出</el-button>
        </el-header>
        <!-- 页面主题区域 -->
        <el-container>
            <!-- 侧边栏 -->
            <el-aside :width="isCollapse ? '64px' : '200px'">
                <div class="toggle-button" @click="toggleCollapse">|||</div>
                <!-- 侧边栏菜单区域 -->
                <el-menu background-color="#333744" text-color="#fff" active-text-color="#409EFF" unique-opened :collapse="isCollapse" :collapse-transition="false" :router="true" :default-active="activePath">
                    <!-- 一级菜单 -->
                    <el-submenu :index="item.id + ''" v-for="item in menulist" :key="item.id">
                        <template slot="title">
                            <!-- 图标 -->
                        <i :class="iconsObj[item.id]"></i>
                        <!-- 文本 -->
                        <span>{{item.authName}}</span>
                        </template>
                        <!-- 二级菜单 -->
                    <el-menu-item :index="'/' + subItem.path" v-for="subItem in item.children" :key="subItem.id" @click="saveNavState('/' + subItem.path)">
                            <template slot="title">
                                <!-- 图标 -->
                            <i class="el-icon-menu"></i>
                            <!-- 文本 -->
                            <span>{{subItem.authName}}</span>
                            </template>
                        </el-menu-item>
                    </el-submenu>
                </el-menu>
            </el-aside>
            <!-- 右侧主体区 -->
            <el-main>
                <router-view></router-view>
            </el-main>
        </el-container>
    </el-container>
</template>

<script>
export default {
    data() {
        return{
            menulist: [],
            iconsObj :{
                '125':'iconfont icon-user',
                '103':'iconfont icon-tijikongjian',
                '101':'iconfont icon-shangpin',
                '102':'iconfont icon-danju',
                '145':'iconfont icon-baobiao'
            },
            isCollapse : false,
            activePath :''
        }
    },
    created() {
        this.getMenuList()
        this.activePath =window.sessionStorage.getItem('activePath')
    },
    methods:{
        logout(){
            window.sessionStorage.clear()
            this.$router.push('/login')
        },
        async getMenuList(){
            const{data:res} =  await this.$http.get('menus')
            if(res.meta.status !== 200) return this.$message.error(res.meta.msg)
            this.menulist = res.data
             console.log(res)
        },
        // 点击按钮切换菜单折叠
        toggleCollapse() {
            this.isCollapse = ! this.isCollapse
        },
        saveNavState(activePath) {
            window.sessionStorage.setItem('activePath',activePath)
            this.activePath = activePath
        }
    }
}
</script>

 <style lang="less" scoped>
 .home-container{
     height: 100%;
 }
 .el-header{
     background: #373D41;
     display: flex;
     justify-content: space-between;
     padding-left: 0;
     align-items: center;
     color: #fff;
     font-size: 20px;
     > div{
         display: flex;
         align-items: center;
         span {
             margin-left: 15px;
         }
     } 
 }
 .el-aside {
     background: #333744;
    .el-menu {
         border-right: none;
         }
 }
 .el-main {
     background: #eaedf1;
 }

 .iconfont{
     margin-right: 10px;
 }
.toggle-button {
    background: #4A5064;
    text-align: center;
    font-size: 10px;
    line-height: 24px;
    color: #fff;
    letter-spacing: 0.2em;
}
</style>

